ppt

Filename extensions: ppt

A Microsoft
PowerPoint
document. It is binary
but will work directly on any machine that has Microsoft
PowerPoint or Apple Keynote. Note that neither of these products
is free, so this is not a good distribution
format. Also, Microsoft has split this format into two different variants (one uses the PPTX extension while the other uses the PPTM extension) in newer versions of PowerPoint.